Jaeger-LeCoultre Pendulette Squelette

The setting crown of the Concord watch is composed of steel
The setting crown of the Concord watch is composed of steel, rubber and composite materials, interlocked to come up with greater compactness and resistance. The designers of the watch put a raised C1 logo on the rubber end-piece to add a distinctive final touch to the watch's overall design.

today was my first robert frost moment...
hi gang,today i hit the fork in the road in my 2.5 years of wisdom. i was wearing my red sub and this was the first time i switched to my modern gmt because i did not want to scratch the sub for fear of devaluing the watch.this was the first time i have ever considered devaluation of one of my vintage pieces has ever been an issue. i don't know if this is a good or bad thing? my gut reaction is that it's a bad thing.my red sub is my favorite vintage piece and it looks amazing in person, in photos and on my wrist but i don't think i will be able to fully enjoy it from this moment on.i'm afraid my vintage pieces have become like t bills or other forms of investment. my plan is to sell off my vintage collection except for one vintage gmt to buy a car once i buy house in the next 12 months.this was bound to happen to me at some point as the valuation of the vintage pieces has morphed my perspective on collecting rolex watches, especially vintage rolex pieces. they will stay in the saf

confusion
IWC portuguese perpetual calender, Ebel BRT 1911, Longiness perpetual calender. Plz advice me without any bias.

Factoid of the Day 1-07-08
In an ongoing poll, it appears that nearly two-thirds of people prefer to check the current time on their cell phone rather than on a conventional wristwatch. The Gizmodo poll, at the time of this post, is showing that 64.7% of people look up the time on their phones, compared to just 31.0% of people who still use a wristwatch.

question about atomic timekeeping
Does Atomic timekeeping keep the date correct, even on the watches that only display the day of month? For example, my current watch (Timex) has the day of month window at the 3-o'clock, but I have to adjust it at the first of most every month.I am looking to upgrade to a better model, but do not want to have to adjust the date at the end of every month like I do my Timex.I would like to get a Luminox Dive watch, but they have the date window without atomic timekeeping and I am afraid that model has to be adjusted every month as well. Thanks in advance for any tips.